Sharp PG-C20XU Service Manual

Also see for Notevision PG-C20XU: Operation manual Service manual Operation manual

34PG-C20XUPG-C20XEAN-Z7TYESYESYESYESYESChecking the lamplight-upTurn on the power switch.Is discharge sound heardfrom the lamp?Insert the BA harnesstightly. Or replace it asrequired.Go to "Checking thepower unit".Replace the ballast unit.NOGo to "Checking themicrocomputerperipherals".NONOAre DC260-400V voltagesapplied between the pinsof PL connector?NOReplace the lamp.NOIs the lamp socketdisconnected?Reconnect the lampsocket tightly.Is the BA harness tightlyinserted? Is the harnessbroken?Is voltage of over 1Vapplied between pins (1)and (2) of BA harness?YESYESYESNOChecking the PLL circuitIs there 120MHz clockoutput at pin (8) ofIC8001?IC8001 or its peripheralcircuit defective.EndNOIs there 40MHz clockoutput at pin (9) ofIC8001?NOIs there 16MHz or soclock output at pin (7) ofIC8001?